| 摘要 |
<p>PURPOSE:To achieve stable generation control without use of a rotation detector by starting an induction generator using the switching control signal from an instantaneous current control circuit, and subsequently operating the generator using the switching control signal from a peak current control circuit. CONSTITUTION:An operation command 11 is input to a start-up control circuit 11, and a negative slip is output to a slip frequency control circuit 14. The data input of a data selector 20 is set to the instantaneous current control circuit 16 side. When the detection voltage of a voltage detector 10 exceeds a specified value, a start-up circuit 12 closes a breaker 6 to connect a load 7 and thereby start up a voltage control circuit 13. The start-up circuit 12 also changes the setting of the data selector 20 to the peak current control circuit 19 side. Variation in the rotation of a motor 1 is automatically followed through the control of the peak current control circuit 19. This prevents the interruption of power generation due to failure in a rotation detector 8.</p> |
